| 单词 | gamma |
| 释义 | gamma /gam"euh/, n. 1. the third letter of the Greek alphabet. 2. the consonant sound represented by this letter. 3. the third in a series of items. 4. (cap.) Astron. a star that is usually the third brightest of a constellation: The third brightest star in the Southern Cross is Gamma Crucis. 5. a unit of weight equal to one microgram. 6. Physics. a unit of magnetic field strength, equal to 10-5 gauss. 7. Photog. a measure of the degree of development of a negative or print. 8. Television. an analogous numerical indication of the degree of contrast between light and dark in the reproduction of an image in television. 9. Chiefly Brit. a grade showing that an individual student is in the third, or lowest, of three scholastic sections in a class. Cf. alpha (def. 7), beta (def. 8). [ < Gk gámma] |
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